Ouch! Radiation Injury
Beware of Effects
Risky business
Measure up
On a cellular level
100
Ionization and this other form of mechanism radiation injury.
What is free radical formation?
100
This curve is used to correlate the damage of tissue with the dose of radiation received.
What is Dose-Response Curve?
100
Radioactive material in the earth and air.
What is Terrestrial?
100

100 rems

What is 1mSv equal to?

100
An uncharged atom or molecule that exists with a single, unpaired electron in the outermost shell. Highly reactive and unstable with the ability to combine with toxins.
What is a free radical?
200
The time from exposure to ionizing radiation and the appearance of observable clinical signs.
What is Latent Period?
200
No matter how small the amount of radiation received, some biological damage occurs.
What is Non-threshold?
200

This fruit has more radiation than a bitewing radiograph.

What is a banana?

200

Happens at 70Kv and above

What is characteristic radiation?

200
The x-ray photon interacts with tissues and results in ionizing, excitation, or the breaking down of molecular bonds; all of which cause chemical change that results in this.
What is biological damages?
300

This dentist discovered X-radiation.

 Who is Conrad Roentgen?

300
Examples of this radiation effect are cancer and mutation. No dose threshold; effects do not depend on the magnitude of the absorbed dose.
What is Stochastic?
300
The potential risk of dental radiography inducing a fatal cancer in an individual is about 3 in ( ).
What is 1 million?
300
Measurement in dental radiography to express the small doses used.
What is Milli?
300
One of the results when x-rays strike patient's tissue is ionization produced through the photoelectric effect also called this.
What is Compton scatter?
400
This theory of radiation injury is very infrequent and cell damage results when ionizing radiation directly hits critical areas within the cell.
What is Direct Radiation Injury?
400
Examples: erythema, hair loss, cataracts, and decreased fertility. Somatic effects that have a threshold; effects increase in severity with increasing absorbed rate.
What is Non-Stochastic effect?
400
The risk a person developing cancer spontaneously is much higher ( ) in 1 million.
What is 3,300?
400
Traditional units of measurement.
What is Roentgen (R), rad
400
These four are considered critical organs to dental radiography.
What is bone marrow, lens of the eye, skin, and thyroid gland?
500
This theory of Radiation Injury involves x-ray photons that are absorbed within the cell and cause the formation of toxins, which in turn damage the cell.
What is Indirect Theory?
500
These effects are seen in the person irradiated, not seen in future generations. Opposite of Genetic effects.
What is Somatic?
500

Examples of artificial and human made radiation.

What is microwaves, cell phones, nuclear medicine, fluoroscopy, medical, dental, and radiation therapy?

500

This is the amount added by the step up transformer to the cathode to move the electrons to the anode.

What is 65,000-100,000V
500

These are the three radioresistant organs.

What is salivary glands, kidneys, and liver?

M
e
n
u